Voice recognition or speech recognition devices is the translation of
spoken words into text. It is also known as “Automatic Speech Recognition”,
“Speech to Text” or “STT”. Voice recognition programs do not actually
understand speech; they only recognize a vocabulary of pre-programmed words.
Voice recognition is commonly used to operate a device, perform
commands, or write without having to operate a keyboard, mouse, or press any
buttons. They are often used to also detect from the wave lengths that a specific
voice is speaking the words, like the driver of the car.
The term voice recognition refers to finding the identity of “who” is
speaking, rather than what they are saying. It can be used to authenticate or
verify the identity of a speaker as part of a security process.
Mobile devices are seen as ideal platform for using voice recognition-
mainly because, when you’re using your smart phone, you can use your hands to
do other things. Although smart phone processor power has advanced
significantly, voice recognition still requires a great deal of heavy lifting
and therefore Apple has chosen to use cloud technologies to offload to servers
to do most of the processing.
The US military and several aerospace companies are researching the use
of speech recognition to control an aircraft. In theory, this will be faster
than using a joystick or wheel.
Types of Voice Recognition
Systems
Speaker Dependent System - The voice recognition
must be trained before it can be used. This often requires a user, who reads a
series of words and phrases so the computer can understand the user’s voice.
Speaker Independent System – The voice
recognition software recognizes most users’ voices with no training.
Discrete Speech Recognition – The user must
pause between each word so that the speech recognition can identify each
separate word.
Continuous Speech
Recognition – The voice recognition can understand a normal rate of speaking.
Natural Language – The speech
recognition not only can understand the voice but also return answers to
questions or other queries that are being asked.
Benefits
Reduce
Costs and Improve Efficiency
When voice technology is used for order picking procedures for example,
there is no need to print paper picking lists because these lists are verbally
communicated to the worker. Voice applications have proven to greatly reduce
supply and labor costs by saving paper and reducing steps in various
procedures.
Improves
Warehouse Safety
When works are using voice technology there are not required to spend
nearly as much time looking at and handling mobile devices. The “hands free and
eyes free” operation provided by voice applications leads to less waste paper
or label backing sheets, resulting in a cleaner and safer ware house.
Reduce
training Procedures
New warehouse order pickers have found that voice directed tasks that
are easier to learn and follow than interpreting a paper task. Training time is
significantly reduced, and workers are able to adapt to new tasks quicker
providing additional cost savings and ROI for voice technology.
Receive
Fast ROI
Voice technology provides a realistic and fast ROI. When speech
recognition is used for order picking for example, companies operating more
than one picking shift will spread the cost out across all shifts and see a ROI
of less than 6 months on average. Companies operating a single picking shift
will see an ROI of approximately 1 year.
When speech recognition is implemented properly companies will obtain a
valuable ROI from their voice recognition technology solution.
Disadvantages
- Error rate is considerably high.
- Recognition of words is slow.
- Words sounding similar cannot be differentiated.
- The system is not suitable for use in noisy places.
- The software must be trained to recognize technical words.
- Many people find it difficult to speak in a ‘writing’ style.
Because of their limitations and high cost, voice recognition systems
have traditionally been used only in a few specialized situations. For example,
such systems are useful in instances when the user is unable to use a key board
to enter data because his or her hands are occupied or disables. Instead of
typing commands, the user can simply speak into a headset. Increasingly,
however, as the cost decreases and performance improves, speech recognition
systems are entering the mainstream and are being used as an alternative to
keyboards.
Voice recognition or voice activated applications have become buzzing
concept in recent years. The idea that a person is able to speak into a
microphone attached to a computing device and those words typed out used to be
the stuff of science fiction and part of “Iron Man”, is now REALITY.



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